<template>
  <div class="login_container">
    <div class="login_box">
      <!--头像区域-->
      <div class="avator_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!--登陆表单区域-->
      <el-form ref="loginFormref"
        :model="loginForm"
        :rules="loginFormrules"
        label-width="0px"
        class="login_form"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            v-model="loginForm.username"
            prefix-icon="iconfont icon-user"
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            v-model="loginForm.password"
            prefix-icon="iconfont icon-3702mima"
            type="password"
          ></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetloginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>



<script>
export default {
    data(){
        return{
            /* 这是登陆表单的数据绑定对象 */
            loginForm:{
                username:'admin',
                password:'123456'
            },
            /* 这是表单验证规则 */
            loginFormrules:{
                username:[
                    { required: true, message: '请输入名字', trigger: 'blur' },
                    { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' } 
                ],
                password:[
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
                ]
            }
        }
    },
    methods:{
        /* 点击重置按钮 */
        resetloginForm(){
            /* console.log(this) */
            this.$refs.loginFormref.resetFields();
        },
        login(){
            this.$refs.loginFormref.validate(async valid=>{
              if(!valid) return;
              const {data: res} = await this.$http.post('login', this.loginForm);
              console.log(res);
              if(res.meta.status!=200) return this.$message.error('登陆失败');
              this.$message.success('登陆成功');
              //将token保存到sessionstorage中
              //console.log(res);
              window.sessionStorage.setItem('token',res.data.token);
              //通过编程式导航跳转到后台主页，路由地址是/Home
              this.$router.push("/home");
            });
        }
    }
}
</script>



<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}
.login_box {
  background-color: #fff;
  height: 300px;
  width: 450px;
  border-radius: 10px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  .avator_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    box-shadow: 0 0 10px #ddd;
    padding: 10px;
    background-color: #fff;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
  .login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 30px;
    box-sizing: border-box;
  }
  .btns {
    display: flex;
    justify-content: flex-end;
  }
}
</style>
